Notepad++ Installation Error

I encountered the same problem when tried to install the latest version, npp.6.3.2.Installer.exe.

One solution is: right click and Run as Administrator. It works properly then.

Download the ZIP package from the Notepad++ website. Unzip it, and then copy the langs.model.xml file from the package into C:\Program Files (x86)\Notepad++.

The application doesn't necessarily need to be installed, either. You can always just unzip the package to your preferred location and then launch the application directly from that folder. Should work just as well.

In any case, I believe you answer lies in downloading the .ZIP version of Notepad++, not the Windows Installer.

I just experienced the same issue with the new v6.3.2. Uninstalling, rebooting, and trying the previous version resulted in the same failure.

I ended up starting an "Administrator" command prompt and running the installer from there. It worked.
> pushd %USERPROFILE%\Downloads
> npp.6.3.2.Installer.exe
I think the Windows installer is failing to launch the UAC prompt to request admin rights when double-clicked. The command prompt trick works around this.